Oracle reported another disappointing quarter, as revenue growth once again stalled in the latest period and the software company’s newer computer business continued to decline. The company managed to post a 10% boost in net income for the fourth fiscal quarter ended May 31, but adjusted earnings missed its expectations. Shares were down 7.3% to $30.77 premarket.

Idenix said planned clinical trials for one of its experimental hepatitis C drugs have been put on hold after regulators requested additional safety data, dealing a blow to what analysts said is the company’s most promising compound. Shares slumped 33% to $3.45 premarket.

Spreadtrum received a roughly $1.31 billion nonbinding acquisition offer from Tsinghua Unigroup Ltd., a state-owned company funded by Tsinghua University in China. The wireless-chip designer said Unigroup has offered to pay $28.50 per American depositary share, a 28% premium to its Thursday close. Spreadtrum’s ADSs rose 23% to $27.51 premarket.

CarMax Inc.'s fiscal first-quarter earnings rose 21% as the number of used cars sold rose sharply. Results beat analysts’ expectations. CarMax is the biggest used-vehicle seller in the U.S. Shares rose 8.8% to $48.47 premarket.

PharMerica Corp. said in a regulatory filing that it has been informed by Kindred Healthcare Inc. (KND) that it isn’t renewing PharMerica’s contract for skilled nursing pharmacy services when the current contract expires Dec. 31. Pharmercia provides hospital pharmacy management services to Kindred’s hospitals under a separate contract that continues though 2014. PharMerica shares fell 5.1% to $15.00 premarket.

Ashford Hospitality Trust 's offering of 11 million shares priced at a 3.5% discount to the lodging-industry real-estate investment trust’s closing price. Shares were down 4.8% to $11.84 premarket, below the offering’s $12 a share price.

American Express Co. named McKesson Corp.'s chief financial officer, Jeffrey C. Campbell, as its new finance chief, succeeding Daniel Henry, who last month announced plans to retire.

Agricultural giant Archer Daniels Midland Co. confirmed it is in discussions about the potential sale of its cocoa business, a unit that represents a small part of its revenue.

Medtronic Inc.'s board has approved a 7.7% increase in its cash dividend and raised its stock repurchase authorization by 80 million shares, as the medical device maker looks to increase shareholder value.

Standard & Poor’s Ratings Services placed Walter Energy Inc.'s speculative-grade ratings on CreditWatch with negative implications on the coal producer’s announcement that it won’t proceed with a plan to refinance a portion of its debt.

Technology licensing company Wi-Lan Inc. agreed to a broad long-term renewal of a licensing agreement with Samsung Electronics Co. (SSNHY, 005930.SE) for the Ottawa-based company’s patents for wireless products.